.big {
  margin: 0 auto;
  width: 1240px;
}

.book-image {
  max-width: 200px;
  margin-right: 20px;
}

h2 {
  font-size: 24px;
  margin-bottom: 20px;
}

h3 {
  font-style: 20px;
  margin-top: 30px0;
}

form {
  margin-top: 20px;
}

form lable {
  margin-top: 20px;
  background: #007bff;
  color: white;
  bottom: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
}

.button {
  margin-top: 20px;
  background-color: #007bff;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
}

.button:hover {
  background-color: #0056b3;
}

.comment-section {
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  padding: 15px;
  border-radius: 5px;
  margin-bottom: 20px;
}

/* 评分星星样式 */
.rating {
  color: gold;
}